<script>
import Content from './content'
export default {
  name: 'Tabs',
  data () {
    return {
      showContent: []
    }
  },
  components: {
    Content
  },
  // props不可以直接被改变
  props: {
    defaultActiveKey: {
      type: String,
      default: '1'
    }
  },
  methods: {
    updateDefaultKey (index) {
      this.$emit('callback', index)
    }
  },
  /**
     * 1.render渲染的时候，插槽直接使用this.$slots.default
     * 2.插槽是读取嵌套规则的结构
     */
  render () {
    return (
      <div>
        <ul class="tabs-header">{ this.$slots.default }</ul>
        <Content showContent={ this.showContent }/>
      </div>
    )
  }
}
</script>

<style scoped>

.tabs-header {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    border-bottom: 2px solid #ededed;
    justify-content: center;
  align-items: center;
}

</style>
